Display apparatus including a backlight assembly

Abstract

A display apparatus includes first and second substrates, a first side sealing layer, a ground connecting part, a flexible film, a driving circuit substrate, and a backlight assembly. The first substrate includes sides extending in a first and a second direction. The second substrate is disposed opposite to the first substrate and is larger in the second direction. The second substrate includes a thin film transistor, a ground wiring and first to fourth side surfaces. The first side sealing layer is disposed on the fourth side surface. The ground connecting part is disposed on the second substrate and is electrically connected to the ground wiring and the first side sealing layer. The flexible film is connected to the second substrate. The driving circuit substrate is connected to the flexible film. The backlight assembly is disposed between the driving circuit substrate and the first substrate.

What is claimed is: 
     
       1. A display apparatus, comprising;
 a display area arid a non-display area; 
 a first substrate having sides extended in a first direction and a second direction, the second direction substantially perpendicular to the first direction; 
 a second substrate disposed opposite to the first substrate, the second substrate being larger than the first substrate in the second direction, the second substrate comprising a thin film transistor and a ground wiring, the second substrate further comprising a first side surface extending in the second direction, a second side surface opposite to the first side surface, a third side surface connected to the first side surface and the second side surface and extending in the first direction, and a fourth side surface opposite to the third side surface; 
 a first side sealing layer directly disposed on and extending along the fourth side surface of the second substrate; 
 a ground connecting part disposed on the second substrate and electrically connected to the ground wiring and the first side sealing layer; 
 a flexible film connected to the second substrate; 
 a driving circuit substrate connected to the flexible film; and a backlight assembly disposed between the driving circuit substrate and the first substrate, 
 wherein a portion of the ground wiring is disposed in the non-display area and is at least partially covered by the ground connecting part in a plan view, and 
 wherein a material composition of the first side sealing layer is different from a material composition of the ground connecting part. 
 
     
     
       2. The display apparatus of  claim 1 , wherein the backlight assembly comprises a light source configured to provide light to a display panel comprising the first and second substrates and a case including a metal. 
     
     
       3. The display apparatus of  claim 2 , wherein the driving circuit substrate includes a ground part electrically connected to the ground wiring through the flexible film, and grounded to the case of the backlight assembly. 
     
     
       4. The display apparatus of  claim 3 , wherein the ground part is electrically connected to the backlight assembly through a ground pin passing through the driving circuit substrate. 
     
     
       5. The display apparatus of  claim 3 , further comprising:
 a cover part configured to cover the driving circuit substrate, 
 wherein the cover part comprises a bottom portion disposed in parallel with the display panel, a step portion forming a step with the bottom portion and coupled with the backlight assembly, and a sidewall substantially perpendicular to the bottom portion, and 
 the driving circuit substrate is disposed between the backlight assembly and the cover part. 
 
     
     
       6. The display apparatus of  claim 5 , wherein the sidewall is spaced apart from the second substrate in a third direction, the third direction substantially perpendicular to the first and second directions. 
     
     
       7. The display apparatus of  claim 1 , further comprising:
 a liquid crystal layer disposed between the second substrate and the first substrate; and 
 a sealing member disposed between the second substrate and the first substrate to seal the liquid crystal layer, 
 wherein the ground connecting part contacts the sealing member. 
 
     
     
       8. The display apparatus of  claim 1 , wherein the first side sealing layer comprises conductive particles and a polymeric material including a black pigment. 
     
     
       9. The display apparatus of  claim 8 , further comprising:
 a second side sealing layer disposed on the first side surface, the second side surface and the third side surface of the second substrate, 
 wherein the second side sealing layer covers the first side surface, the second side surface and the third side surface of the second substrate. 
 
     
     
       10. The display apparatus of  claim 9 , wherein the second side sealing layer comprises an insulation material. 
     
     
       11. The display apparatus of  claim 1 , wherein the ground connecting part is a silver (Ag) dot. 
     
     
       12. The display apparatus of  claim 11 , further comprising a ground connecting layer disposed on a side surface of the first substrate and connected to the ground connecting part. 
     
     
       13. The display apparatus of  claim 12 , wherein the ground connection layer comprises substantially the same material as the ground connecting part. 
     
     
       14. The display apparatus of  claim 11 , wherein the second substrate comprises an upper base substrate and a metal pattern disposed on the upper base substrate, and the metal pattern comprises the ground wiring. 
     
     
       15. The display apparatus of  claim 1 , wherein the first substrate comprises a lower base substrate and a transparent conductive layer disposed between the lower base substrate and the backlight assembly; and
 the transparent conductive layer is electrically connected to the ground connecting part. 
 
     
     
       16. The display apparatus of  claim 1 , wherein a portion of the second substrate is not covered by the first substrate, and
 the flexible film is connected to the exposed portion of the second substrate. 
 
     
     
       17. The display apparatus of  claim 1 , wherein the first side sealing layer includes a conductive material on the fourth side surface of the second substrate. 
     
     
       18. The display apparatus of  claim 1 , wherein the first side sealing layer comprises a sealing layer comprising an insulation material and a conductive layer contacting the sealing layer. 
     
     
       19. The display apparatus of  claim 1 , wherein the second substrate further comprises a signal wiring electrically connected to the thin film transistor,
 the flexible film comprises a first connecting terminal and a second connecting terminal, 
 the ground wiring is electrically connected to the first connecting terminal, and the second connecting terminal is electrically connected to the signal wiring. 
 
     
     
       20. A display apparatus, comprising:
 a display panel comprising a display area and a non-display area, a lower substrate, an upper substrate disposed opposite the lower substrate, a thin film transistor, a ground wiring, and a liquid crystal layer disposed between the lower substrate and the upper substrate; 
 a side sealing layer directly disposed on a side surface of the upper substrate and being conductive; 
 a ground connecting part disposed on a lower surface of the upper substrate, and electrically connected to the ground wiring and the side sealing layer; 
 a backlight assembly disposed under the display panel; 
 a flexible film electrically connected to the ground wiring; and 
 a driving chip disposed on the flexible film, 
 wherein a portion of the ground wiring is disposed in the non-display area and is at least partially covered by the ground connecting part in a plan view, and 
 wherein a material composition of the side sealing layer is different from a material composition of the ground connecting part.